Download World of Warcraft 7.3.5 from official battle.net website
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Download this package and unzip it inside the WoW folder, replacing any file Download
Drag and drop WoW.exe inside connection_patcher.exe
Modify the file WTF/Config.wtf replacing the row 'SET portal "EU"' with 'SET portal "server.forgottenlands.eu"'
Open WoW_Patched.exe and login with your details